{
  "annotation_id": "6d57376e-4f13-4411-8368-78a61a07bbb7",
  "date_created": "2026-03-02T18:01:07.218000Z",
  "date_modified": "2026-03-02T18:01:07.218000Z",
  "file_hash": "80d4e307f2b75d6bbf0f1fed3b46b448a5205fc9d772cc01788a9e55b43c9e47",
  "private": false,
  "record": {
    "abstract": "A spherical tokamak (ST) with a plasma center column (PCC) can be formed via\ndriven magnetic relaxation of a screw pinch plasma. An ST-PCC could in\nprinciple eliminate many problems associated with a material center column, a\nkey weakness of the ST reactor concept. This work summarizes the design space\nfor an ST-PCC in terms of flux amplification, aspect ratio, and elongation,\nbased on the zero-beta Taylor-relaxed analysis of Tang \u0026 Boozer [Phys. Plasmas\n13, 042514 (2006)]. The paper will discuss (1) equilibrium and stability\nproperties of the ST-PCC, (2) issues for an engineering design, and (3) key\ndifferences between the proposed ST-PCC and the ongoing Proto-Sphera effort in\nItaly.",
    "arxiv_id": "physics/0605174",
    "authors": [
      "S. C. Hsu",
      "X. Z. Tang"
    ],
    "categories": [
      "physics.plasm-ph"
    ],
    "journal_ref": "Journal of Fusion Energy 26, 85 (2007)",
    "title": "A Proposed Experiment to Study Relaxation Formation of a Spherical   Tokamak with a Plasma Center Column",
    "url": "https://arxiv.org/abs/physics/0605174"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "53eabb4a-cc11-4fde-8483-1f90fc664a24",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}